Charlemagne, King of the Franks and later Holy Roman Emperor, instigated a cultural revival known as the Carolingian Renaissance. This revival used Constantine's Christian empire as its model, which flourished between 306 and 337. Constantine was the first Roman emperor to convert to Christianity and left behind an impressive legacy of military strength and artistic patronage. Charlemagne saw himself as the new Constantine and instigated this revival by writing his Admonitio generalis (789) and Epistola de litteris colendis (c.794-797). In the Admonitio generalis, Charlemagne legislates church reform, which he believes will make his subjects more moral and in the Epistola de litteris colendis, a letter to Abbot Baugulf of Fulda, he outlines his intentions for cultural reform. Most importantly, he invited the greatest scholars from all over Europe to come to court and give advice for his renewal of politics, church, art and literature. Carolingian art survives in manuscripts, sculpture, architecture and other religious artifacts produced during the period 780-900. These artists worked exclusively for the emperor, members of his court, and the bishops and abbots associated with the court. Geographically, the revival extended through present-day France, Switzerland, Germany and Austria. Charlemagne commissioned the architect Odo of Metz to construct a palace and chapel in Aachen, Germany. The chapel was consecrated in 805 and is known as the Palatine Chapel. This space served as the seat of Charlemagne's power and still houses his throne today. Charlemagne, like Constantine before him, left behind an almost mythic legacy. The Carolingian Renaissance marked the last great effort to revive classical culture before the Late Middle Ages. Charlemagne's empire was led by his successors until the late ninth century. In early tenth century, the Ottonians rose to power and espoused different artistic ideals.
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